High-resolution multichannel Time-to-Digital Converter core implemented in FPGA for ToF measurements in SiPM-PET

Author

Torres, Juana ; Aguilar, Albert ; Garcia-Olcina, R. ; Martos, J. ; Soret, J. ; Gonzalez, A.J. ; Conde, P. ; Hernandez, L. ; Sanchez, F. ; Benlloch, J.M.

Author_Institution

Commun. & Digital Syst. Design group (DSDC), Univ. de Valencia, Valencia, Spain

fYear

2013

fDate

Oct. 27 2013-Nov. 2 2013

Firstpage

1

Lastpage

5

Abstract

In this contribution, Coincidence Resolving Time (CRT) results with the developed multichannel FPGA-TDC are showed as a function of different configurations for both, the sensor bias voltage and the digitizer threshold. The dependence of the CRT with the sensor matrix temperature, the amount of SiPM active area and the crystal type are also analyzed. Preliminary measurements carried out with a crystal array of 2 mm pixel size and 10 mm height have shown time resolutions for the entire 144 SiPM two-detectors ensemble as good as 800 ps.

Keywords

analogue-digital conversion; biomedical equipment; convertors; field programmable gate arrays; medical signal processing; photodetectors; photomultipliers; positron emission tomography; silicon; Si; SiPM active area; SiPM-PET; ToF measurements; coincidence resolving time; crystal array of; crystal type; digitizer threshold; high-resolution multichannel time-to-digital converter core; multichannel FPGA-TDC; preliminary measurements; sensor bias voltage; sensor matrix temperature; size 10 mm; size 2 mm; Detectors; Matrix converters; Positron emission tomography; Semiconductor device measurement; Surges; Temperature measurement; Temperature sensors;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2013 IEEE

Conference_Location

Seoul

Print_ISBN

978-1-4799-0533-1

Type

conf

DOI

10.1109/NSSMIC.2013.6829200

Filename

6829200